Have you confirmed that the rtnet drivers for your system are loaded?
Are they built into the kernel or built as modules?

-Greg

On Tue, Feb 13, 2018 at 8:26 AM, Pintu Kumar <pintu.p...@gmail.com> wrote:
> Hi,
>
> I am expecting some reply again with rtnet setup on ubuntu (virtual
> box) using version: 4.9.62-pintu-xeno-3.0.6+
> Note: I am using virtual box for experimental purpose before moving it
> to the actual hardware
>
> I haven't got any reply with my previous query so I am top posting again.
>
> I am trying to verify UDP client/server socket communication using
> rtnet interface.
> Using loopback (rtlo with local address 127.0.0.1) it is working fine.
>
> But, I have no success using the rteth0/1 (actual ip address) interface.
>
> In my machine the network interface names are shown like below:
> 1) enp0s3
>                  inet addr:10.0.2.15
> 2) enp0s8
>                  inet addr:192.168.56.101
>
> When I try to start rtnet, I get these errors:
>
> $ sudo /usr/xenomai/sbin/rtnet start
> rteth0: ERROR while getting interface flags: No such device
> rteth0-mac: ERROR while getting interface flags: No such device
> ioctl: No such device
> ioctl: No such device
> ioctl: No such device
> ioctl: No such device
> ioctl (add): No such device
> ioctl (add): No such device
> ioctl (add): No such device
> vnic0: ERROR while getting interface flags: No such device
> SIOCSIFADDR: No such device
> vnic0: ERROR while getting interface flags: No such device
> Waiting for all slaves...ioctl: No such device
> ioctl: No such device
>
> After this I see only rtlo is up, and I could not find rteth* device.
>
> 3) rtlo
>
> 4) $ sudo /usr/xenomai/sbin/rtifconfig
>           rtlo      Medium: Local Loopback
>                      IP address: 127.0.0.1
>                      UP LOOPBACK RUNNING  MTU: 1500
>
>
> 5) In the rtnet script I tried replacing the eth0 interface with my
> system interface name, but that also did not help.
>
> So, please let me know how to bring up rteth0 interface on my system ?
>
>
> Hope I will get some help this time to proceed.
> Please help!
>
>
> Thanks,
> Pintu
>
>
> On Tue, Jan 16, 2018 at 7:06 PM, Pintu Kumar <pintu.p...@gmail.com> wrote:
>> Ok, I think I found the problem.
>>
>>> modprobe: FATAL: Module rttcp not found in directory
>>
>> 1)
>> I think the rttcp module is disabled in the kernel.
>>
>> drivers/xenomai/net/stack/ipv4/Kconfig:
>> # source "drivers/xenomai/net/stack/ipv4/tcp/Kconfig"
>>
>> But I wonder, why the rttcp is commented out in the kernel source.
>> Is there any problem using tcp on xenomai ?
>>
>>
>> 2)  If I remove "tcp" from rtnet.conf and also make RTCAP as "no", I
>> am able to run the rtnet script.
>> But, I still get the following errors:
>>
>> # sudo /usr/xenomai/sbin/rtnet start
>> ioctl: No such device
>> ioctl: No such device
>> ioctl: No such device
>> ioctl: No such device
>> ioctl (add): No such device
>> ioctl (add): No such device
>> ioctl (add): No such device
>> vnic0: ERROR while getting interface flags: No such device
>> SIOCSIFADDR: No such device
>> vnic0: ERROR while getting interface flags: No such device
>> SIOCSIFNETMASK: No such device
>> Waiting for all slaves...ioctl: No such device
>> ioctl: No such device
>>
>>
>> However, the rt_ modules are getting installed.
>>
>> # lsmod | grep rt
>> rtmac                   7879  1 tdma
>> rtcfg                  32455  0
>> rt_loopback             1143  1
>> rtpacket                5768  0
>> rtudp                   9262  0
>> rt_eepro100            14398  0
>> rtipv4                 21568  2 rtudp,rtcfg
>> rtnet                  46929  8
>> rtipv4,rt_loopback,rtmac,rt_eepro100,rtpacket,rtudp,rtcfg,tdma
>>
>>
>> 3) Another problem is, if I do : ifconfig, I could not find any rtnet0 node.
>>     Also, if I run: "/usr/xenomai/sbin/rtping 10.0.2.15", I get this:
>> # sudo /usr/xenomai/sbin/rtping 10.0.2.15
>> Real-time PING 10.0.2.15 56(84) bytes of data.
>> ioctl: No route to host
>>
>>     So, how can I make sure that rtnet is working ?
>>
>>
>> Thanks,
>> Pintu
>>
>>
>> On Tue, Jan 16, 2018 at 5:42 PM, Pintu Kumar <pintu.p...@gmail.com> wrote:
>>> Hi,
>>>
>>> I have brought up Xenomai 3.0.6 (dual kernel, cobalt) on a
>>> Ubuntu-32-bit machine with Linux Kernel version 4.9.62.
>>> # cat /proc/xenomai/version
>>> 3.0.6
>>>
>>> # uname -a
>>> Linux osboxes 4.9.62-pintu-xeno-3.0.6+ #4 SMP Wed Jan 3 18:54:46 IST
>>> 2018 i686 i686 i686 GNU/Linux
>>>
>>> My Xenomai libraries are installed under:
>>> # ls /usr/xenomai/
>>> bin/     demo/    etc/     include/ lib/     sbin/
>>>
>>>
>>> I have verified with sample posix and native application and the
>>> xenomai is working fine.
>>>
>>> -------------------------
>>> Next, I wanted to check rtdm driver such as RTnet.
>>> So, I noticed that RTNET module needs to be enabled in my patched kernel 
>>> 4.9.62.
>>> So, I enabled it and installed the modules successfully.
>>>
>>> I also see that the modules are installed under:
>>> # ls 
>>> /lib/modules/4.9.62-pintu-xeno-3.0.6+/kernel/drivers/xenomai/net/drivers/
>>> e1000/          rt_8139too.ko   rt_eepro100.ko  rt_loopback.ko
>>>
>>> # ls /lib/modules/4.9.62-pintu-xeno-3.0.6+/kernel/drivers/xenomai/net/stack/
>>> ipv4/     packet/   rtcfg/    rtmac/    rtnet.ko
>>>
>>>
>>> So, after that, when I try to install the rtnet driver, I get the
>>> following error:
>>> # sudo /usr/xenomai/sbin/rtnet -v start
>>> Turning on verbose mode
>>> modprobe: FATAL: Module rttcp not found in directory
>>> /lib/modules/4.9.62-pintu-xeno-3.0.6+
>>>
>>>
>>> When, I check the config file, the RTNET module path is listed as:
>>> RTNET_MOD="/lib/modules/`uname -r`/kernel/drivers/xenomai/net"
>>>
>>>
>>> I tried changing it to the correct path by adding xenomai/net/drivers
>>> or xenomai/net/stack, but still I get the same error.
>>>
>>>
>>> Please let me know how to correctly install the RTNET driver using the
>>> /usr/xenomai/sbin/rtnet scripts.
>>>
>>>
>>>
>>> Thanks,
>>> Pintu
>
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